You could use `itemlist*' instead of `itemlist', defining `itemlist*'
like this:
(define (itemlist* . args)
(apply itemlist (filter item? args)))
At Wed, 29 Jun 2011 09:27:52 -0400, "Todd O'Bryan" wrote:
> Hey all,
>> I'm trying to use Scribble to create multiple forms of the same
> document--for example, teacher and student editions of the same text.
> Both documents share a lot of content, but also have differences.
>> I created a parameter and function:
>> (define edition (make-parameter "default"))
>> (define (only-edition v text)
> (if (equal? (edition) v)
> text
> ""))
>> so I could write
>> This content appears in both editions, @only-edition["student"]{while
> this part is only in the student [email protected]["teacher"]{but
> only teachers see this}.
>> Unfortunately, this solution doesn't work for lists.
>> @itemlist[
> @item{appears in both}
> @only-edition["student"][email protected]{appears in student}}
> @only-edition["teacher"][email protected]{appears in teacher}}
> ]
>> I get a contract violation saying that "" isn't valid where an item is
> expected and the same thing happens with #void. I've solved this by
> writing my own @itemlist* that filters out non-items before using
> @itemlist. Is there a better way?
>> Also, if I do
>> @only-edition["teacher]{
> @section{Curriculum Standards}
>> These are the state standards for this lesson:
> @itemlist[@item{Blah}]}
>> I get an error because the stuff in the {...} is interpreted as
> multiple arguments. I can fix the definition by putting a dot in front
> of the text argument so that it can be a list, but then I need some
> way to "unwrap" the list in the Scribble document. Is this possible?
>> Thanks!
> Todd